Clock



FIG. 1 is a front perspective view of a clock;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevation thereof;

FIG. 5 is a top plan view thereof; and,

FIG. 6 is a bottom plan view thereof.

The left and right sides of the clock are mirror images of one another.

The broken lines showing the clock dial and hands in FIGS. 1 and 2 are for illustrative purposes only and form no part of the claimed design. 

I claim the ornamental design for a clock, as shown and described. 